NPPES file of Aug 9, 2026

Internal Medicine Physician in California

17,696 NPPES records list internal medicine physician with a practice address in California, 45 per 100,000 residents, the 17th highest rate of 51. Los Angeles and San Francisco have the most; each record links to the provider's NPI and the California license search. Page 57 of 354.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207R00000X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Los Angeles has the most, 1,423

  1. Los Angeles1,423
  2. San Francisco1,318
  3. San Diego961
  4. Sacramento601
  5. Oakland432

Internal Medicine Physician records in California

  1. Sharon Chien, M.D.San Diego, CA 921231316955420
  2. An Pang Chieng, M.D.Los Angeles, CA 900321821030305
  3. David Chihorek, MDAuburn, CA 956031578554226
  4. Anand Chikyarappa, MDMission Hills, CA 913451780754333
  5. Nitin Chilakamarri, M.D.Pomona, CA 917671679951164
  6. Hilary ChildersSan Francisco, CA 941431861996001
  7. Christine Chileshe, MDHemet, CA 925431598450199
  8. Vanaja Chilukuri, M.D.Union City, CA 945871861578387
  9. Andrew Chin, DOStanford, CA 943051740635721
  10. Bryan Chin, DODublin, CA 945681972756237
  11. Catherine Chin, MDNovato, CA 949451265609481
  12. Cornelia Chin, MDSan Jose, CA 951191104902634
  13. Cynthia Chin, M.D.Union City, CA 945871275611022
  14. Eliza Chin, MDOakland, CA 946101770508558
  15. Elizabeth ChinVallejo, CA 945891972066223
  16. Hans Chin, M.D.La Mesa, CA 919421376616144
  17. Hsiao-Pin Chin, MDAntioch, CA 945311518045616
  18. Jocelyn ChinMountain View, CA 940401437576576
  19. Julia ChinEl Monte, CA 917311326336264
  20. Lawrence Chin, M.D.Mountain View, CA 940401457368953
  21. Matthew ChinMountain View, CA 940401134581341
  22. Melody Chin, MDSacramento, CA 958161992065981
  23. Mun Chin, MDSylmar, CA 913421639337256
  24. Paul Chin, M.D.Yountville, CA 945991457432692
  25. Richard Chin, M.D.San Francisco, CA 941271588825640
  26. Ruben Chin, M.D.Anaheim, CA 928041902829450
  27. Siegried Audfrey Chin, MDSausalito, CA 949651578295879
  28. William Chin, M.D.San Diego, CA 921341821062308
  29. Wing Chin, M.D.Castro Valley, CA 945461124052576
  30. Liviu Chindris, M.DSierra Madre, CA 910241730156472
  31. Akimi Ching, MDLos Angeles, CA 900271144397167
  32. Irene Ching, DOSun City, CA 925861013411602
  33. Steven Ching, M.D.Hemet, CA 925451770016081
  34. Francesca Chinn, MDSan Francisco, CA 941151568540177
  35. Aruna Chinnakotla, MDSouth San Francisco, CA 940801093893604
  36. Mark ChinowskyRancho Palos Verdes, CA 902751699260539
  37. Ravi Chinthakindi, MDLincoln, CA 956481699940379
  38. Dominic Chiong, M.D.San Jose, CA 951481093749715
  39. Jun Chiong, M.D., M.P.H.Redlands, CA 923731598730590
  40. Lolita Chiong, M.D.Union City, CA 945871558387027
  41. Daniel ChiouWest Hollywood, CA 900481427402403
  42. Max Chiou, MDAlhambra, CA 918011316963051
  43. Jason Chirichigno, M.D.Beverly Hills, CA 902121659661239
  44. David Chirikian, MDNewport Beach, CA 926631174211825
  45. Annapoorna Chirra, MDLos Angeles, CA 900951083648380
  46. Yashitha Chirumamilla, MDFremont, CA 945381831849629
  47. Maung Chit Khaing, MDBakersfield, CA 933091821148628
  48. Samarth Chittargi, M.DStockton, CA 952101437414307
  49. Ramya Chitters, MDSanta Clara, CA 950511164884201
  50. Sridhar Chitti, MDVallejo, CA 945891255610424

Source: CMS NPPES, primary taxonomy 207R00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 17 of 51 per resident

  1. New Jersey50
  2. New Hampshire48
  3. Minnesota46
  4. California45
  5. Florida45
  6. Ohio45
  7. 50 states and D.C.44

Source: CMS NPPES, primary taxonomy 207R00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

79.5% of these records appear in a Medicare file, against 78.7% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. California79.5%
  2. United States78.7%

Internal Medicine Physician records in California, measured

  • In a Medicare file14,068 of 17,696 · 79.5% here, 78.7% nationally
  • In the CMS Doctors and Clinicians file11,077 · 62.6% here, 61.4% nationally
  • Not updated in five years or more10,832 · 61.2% here, 55.4% nationally
  • Median graduation year2004 · the 11,065 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207R00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

17,696 NPPES records list internal medicine physician (207R00000X) as their primary taxonomy with a practice address in California: 45 per 100,000 residents against 44 nationally (50 states and D.C.). Los Angeles has 1,423 of them (8%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. New York12,067
  2. Florida10,151
  3. Texas9,175
  4. Pennsylvania7,300

States with a similar rate per 100,000

  1. Minnesota45.9
  2. Ohio44.8
  3. New Hampshire48.0
  4. Maine42.8

The largest states

  1. New York12,067
  2. Florida10,151
  3. Texas9,175
  4. Pennsylvania7,300
  5. Illinois7,238

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.